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Titre :
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Transient natural drying-induced boundary layers, vol.18, n°1-2
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Auteurs :
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W. Ferreira ;
M. Fortes
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Type de document :
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article/chapitre/communication
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Année de publication :
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2000
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Format :
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p. 49-65
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Langues :
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= Anglais
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Catégories :
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THERMIQUE THERMODYNAMIQUE
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Mots-clés :
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COEFFICIENT DE TRANSFERT DE CHALEUR
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SIMULATION NUMERIQUE
;
SECHAGE
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Résumé :
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This work presents a methodology for obtaining heat ans mass transfer coefficients for problems involving natural convection along a flat plate. In order to simulate drying conditions, a set of data ha been obtained for the temperature range between 20 and 98°C and for various absolute humidities, both of the wall and ambient. It is shown that for drying at temperatures above 80°C, Nusselt and Sherwood numbers change very appreciably with respect to values obtained at smaller temperatures. The simulated results show that even for very low temperatures differences, the transient period in natural convection along a flat vertical plate is smaller than 3s.
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